.f-c-c{
    display: flex;
    justify-content: center;
    align-items: center;
}
.h100vh{
    height:100vh;
}
.h100{
    height: 100%;
}
.box{
    text-align: center;
    font-size: 30px;
    font-weight: bold;
    color: white;
    
}